What is the captcha How does it work? | I'm not a robot!

Is a robot a robot? Maybe you're a robot but you still do not know yet. Even if you are a robot, you can read this article. Because, we did not ask you to prove before the article that you are a man or a robot. However, come to the core.
. I'm 100% sure you are very familiar with this term I'm not a Robot. Maybe you went to comment on a website anywhere, or went to log in to an online account or went to buy something online and just before confirming you have given a popup window like the following:

I know that you are very well known to them and if you spend a few hours daily on the Internet, then every day you have to read one of these two people. The first is a bit reasonable, but you think seriously, the second is serious? I must prove whether I am a robot now? What was the need for this extra trouble? So listen, this problem is called CAPTCHA. Many people do not know what it is and what purpose it is used for. But those who do not know, they read this article at the end. Let's talk about what this captcha is, why it is used and its benefits. So let's start by saying no. If you do not know, then first let's know,

What is the captcha

Captcha is not actually a Bangla word. This is not an English word. It's just an abview. In other words, a word made of the first letter of some English words or short form of those words. The word captcha is actually written as a CAPTCHA.Its forms are flowers,

Completely Automated Public Turing test to tell Computers and Human Apart

In simple words, it is a process by which it is possible to separate people and bots or robots.The capture or the creation of a computer or smartphone that is operating outside of the screen is a test for a real man or a robot. Now you can come to the question that why this bizarre question arises, why someone comes to the head and who is the creator of this thing?

Capture is the father or creator, Luis von Ahn.This guy is the creator of the problems of these captives. Although he is not the only coolpin.Google also has a big role here. The problem of this captcha was born in 1997 but it has not yet officially been named. It was named CAPTCHA in 2003.

Why is Captcha required?

Captcha is basically made first to prevent spamming, although captcha is being used for many more purposes now. Well, I understand. But how does captcha stop the spamming? Suppose, a new popular movie released today is a movie.Because of being a new movie, more people will be interested in the movie for the first time to watch the movie at the cinema. As a result, the demand for movie tickets for the first day will be higher than the general. Now at this opportunity a computer programmer will create an intelligent program that will help him buy all the tickets online from the very first day. To do this, he must have a strong bot or program, because he can never do this job alone. With the help of this bot or program, he will buy all the tickets in advance and then start the Black Marketing Because the tickets are out of stock and the demand for tickets is high, they can sell the tickets themselves at a higher price than the ones they bought.

Capture is needed to prevent such illegal activities. To prevent this type of work, the server needs to understand that the device that is being accessed by this server is operating a real person or a programmer made bot. It will be possible to prevent this whole process from being understood beforehand. For that, just before the server is accessed, there are some tasks that are very easy for people, but it is very difficult for computers or robots.

Right from this concept the capture and the use of captures begin. So, some English alphabets or numbers or both are given together in captcha, but letters are a bit distorted. It is distorted in such a way that the human brain can easily understand that it is actually a letter but no program or robot can understand it. Now you are told to rewrite those letters. If you are a human and understand that the angle character, then you can easily access the server or the website by interacting it. But no program or any robot can do it. Because, they can not understand whether they are any letter or not. Inter interiors!

much more intelligent and smart than before.Then, to solve this problem, Google came up with a new method called ↓

No-Captcha Re-Captcha

Now, what is this nokapcha rikapaca again?Actually, it's just a captcha as before, but it's much smarter and intelligent than before. When Google
saw that the previous method is no longer effective, they started thinking that it is more difficult than what can be made that is easier for humans and more difficult for robots? And they got a better way of thinking about it too. Now they thought that they would give some small pictures instead of the text in the caps, and all would be asked to find a specific object from those pictures and mark them. For example, maybe you will be given some small pictures and it will be said that in any of the pictures Mark points must be marked on the road sign, or mark a part of a large photo from which the car has a car. Unless you are able to do this correctly, you will not be allowed to access the site. You can imagine yourself how difficult it is for people and how difficult it is for robots or automated programs.

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This captcha system is now the most used and the most popular. You'll see more of this caption.Again you will not need to fill this captcha again.Sometimes you have to click on the Just Capet, and after some time you will be aproved as a man without doing anything. How is it done? This method is even more smart. Google's great powerful artificial intelligence behind this method. In the meantime, when you click on Capture, your activities are tracked. Your mouse cursor movements, your browser's cookies, your IP addresses, your overlapping browsing hobbies, and more, which Google has kept secret for you.Mainly your mouse cursor movements and your browser's data are checked.

If you are a man, then your mouse cursor movement will not be specific. That means you have to move your mouse cursor in different ways. But if you are a robot, your mouse cursor will go directly to the capture line and click. By looking at this mainly, it can be understood that you are a man or a robot. If you are sure that you are a man, you will be allowed to go without any task. But if you have any doubts, even after watching it and after browsing your browsing hub, you will be given the task of marking that image.

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So, this was Cappa. Hopefully if you do not know anything about the captcha before, then you've got some ideas on this topic.

Here's the end of today. Hope you like the article. If you have any questions or comments, please tell in the comments section. take care.

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